For Loop In Rust Increment By 2
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- Name
- Brent
For Loop In Rust Increment Value By 2
A for loop enables a certain collection of statements to be performed repeatedly inside the loop until a specific condition is met.
Syntax
for variable in expression {
loop code
}
As of Rust 1.28, Iterator::step_by is stable.
To increment by 2 in a for loop in Rust, you can use the step_by
method on the Iterator trait.
This method allows you to specify the amount by which the loop should increment on each iteration.
Here's an example of using step_by
to increment by 2 in a for loop:
Example
fn main() {
for x in (1..10).step_by(2) {
println!("{}", x);
}
}
Output
1
3
5
7
9
In this example, the for loop will start at 1 and increment by 2 on each iteration.
Use rev()
Another way to increment by 2 in a for loop is to use the .rev()
method on the range and then use the .step_by(1)
method on the resulting iterator.
This method allows you to increment by 1 in reverse, which is equivalent to incrementing by 2 in the normal direction.
Here's an example of using this method:
for i in (0..10).rev().step_by(1) {
println!("{}", i);
}
In this example, the for loop will start at 9 and increment by 1 in reverse, printing the numbers 9, 7, 5, 3, and 1.
Summary
Both of these methods provide ways to increment by 2 in a for loop in Rust.
The method you choose will depend on the specific requirements of your code.